C Michael Armstrong's Net Worth

$37.5 Million

Estimate Recalculated Dec 3, 2025 08:09PM EST

Who is C Michael Armstrong

C Michael Armstrong has an estimated net worth of $37.5 Million. This is based on reported shares across multiple companies, which include HCA INC/TN, COMCAST CORP, and CITIGROUP INC.

SEC CIK

C Michael Armstrong's CIK is 0001168011

Past Insider Trading and Trends

2004 was C Michael Armstrong's most active year for acquiring shares with 9 total transactions. C Michael Armstrong's most active month to acquire stocks was the month of December. 2006 was C Michael Armstrong's most active year for disposing of shares, totalling 5 transactions. C Michael Armstrong's most active month to dispose stocks was the month of October. 2008 saw C Michael Armstrong paying a total of $491,675.00 for 33,396.9 shares, this is the most they've acquired in one year. In 2004 C Michael Armstrong cashed out on 220,660 shares for a total of $3,260,240.35, their largest year based on trade value.

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HCA INC/TN

Investor
Updated Nov 21, 2006
Form 4
-100.00%
-30.71K
$51.00
-$620.31K
Nov 21, 2006
Disposition
Nov 17
Form 4
76.60%
6.94K
May 30, 2006
16.00K
Grant
May 25
Form 4
92.76%
7.11K
Jun 13, 2005
14.77K
Grant
Jun 09
Form 4
141.03%
8.13K
Jun 14, 2004
13.89K
Grant
Jun 10
Form 4
8.54K
Jan 30, 2004
8.54K
Grant
Jan 29
Form 3
Jan 30, 2004
Showing 6 results

COMCAST CORP

Investor
Updated Jul 05, 2005
Form 4
-20.32%
-110.25K
$29.57
-$3.26M
Jul 05, 2005
432.26K
Options
May 25
Form 4
3.75K
Apr 08, 2005
3.75K
Grant
May 26
Form 4
7.50K
Nov 08, 2004
7.50K
Grant
Nov 05
Showing 3 results

CITIGROUP INC

Investor
Updated Jan 21, 2010
Form 4
17.32%
42.66K
Jan 21, 2010
408.11K
Grant
Jan 19
Form 4
244.24%
174.72K
Jul 28, 2009
365.44K
Acquisition
Jul 24
Form 4
0.74%
1.19K
$1.31
$1.56K
Apr 02, 2009
190.72K
Grant
Apr 01
Form 4
237.69%
32.11K
Jan 16, 2009
189.53K
Grant
Jan 14
Form 4
27.70K
$17.75
$491.68K
Oct 21, 2008
157.42K
Purchase
Oct 17
Form 4
72.94%
5.70K
Jan 24, 2008
129.72K
Grant
Jan 22
Form 4
45.17%
4.82K
Jan 18, 2007
126.78K
Grant
Jan 16
Form 4
1.28%
1.54K
$51.38
$79.23K
Jan 03, 2007
121.96K
Grant
Jan 01
Form 4
1.35%
1.60K
$49.09
$78.50K
Oct 03, 2006
120.42K
Grant
Oct 01
Form 4
1.34%
1.57K
$49.44
$77.70K
Jul 05, 2006
118.82K
Grant
Jul 01
Form 4
1.43%
1.65K
$46.52
$76.85K
Apr 04, 2006
117.25K
Acquisition
Apr 01
Form 4
84.42%
6.91K
Jan 19, 2006
120.19K
Grant
Jan 17
Form 4
0.66%
1.42K
$48.92
$69.68K
Jan 04, 2006
217.46K
Acquisition
Jan 01
Form 4
0.73%
1.55K
$44.55
$68.96K
Oct 04, 2005
214.56K
Acquisition
Oct 01
Form 4
0.68%
1.43K
$47.64
$68.31K
Jul 06, 2005
211.57K
Acquisition
Jul 01
Form 4
0.68%
1.41K
$48.14
$67.68K
Apr 05, 2005
208.74K
Acquisition
Apr 01
Form 4
123.29%
7.08K
Jan 20, 2005
112.21K
Grant
Jan 18
Form 4
1.70%
1.66K
$46.18
$76.66K
Jan 04, 2005
105.13K
Acquisition
Jan 01
Form 4
1.44%
1.47K
$46.97
$76.00K
Oct 05, 2004
103.47K
Acquisition
Aug 12 - Oct 01
Form 4
1.70%
1.60K
$47.00
$75.34K
Jul 02, 2004
102.00K
Acquisition
Jul 01
Form 4
1.62%
1.51K
$49.64
$74.74K
Apr 05, 2004
100.40K
Acquisition
Apr 01
Form 4
5.00K
Jan 22, 2004
5.00K
Grant
Jan 20
Form 4
1.61%
1.47K
$47.24
$69.56K
Jan 05, 2004
98.89K
Acquisition
Jan 01
Form 4
1.67%
1.50K
$44.29
$66.54K
Oct 03, 2003
97.42K
Acquisition
Oct 01
Form 4
Jul 03, 2003
Showing 25 results